1fb3c167c3cbd4a432a064b299439b3430157dda Add `doc/bitcoin-conf.md` (Hennadii Stepanov)
Pull request description:
From the IRC:
> 2018-10-16T05:35:03 \<wumpus\> if something can be solved by better documentation, please work on documentation!
> 2018-10-16T05:35:12 \<wumpus\> don't change the code instead
Refs:
- #14370
- #14427
- #14494
Based on the BITCOIN.CONF(5) manual page written by Micah Anderson \<micah@debian.org\> for the Debian system.
Tree-SHA512: 16393c9073c027fa1c46f8b59651e60b9a3159b3aeb9b3102040c292d2787f32b1ead5977957ac3ac0759a4bf626650a2325b68ad84320964ac089ffc2d3b4f4
